Piston ring gaps?

Discussion in 'Street/strip 400/430/455' started by Canadian GS 350, Mar 20, 2023.

  1. Canadian GS 350

    Canadian GS 350 Well-Known Member

    470, 4.350 bore, 1/16, 1/16, 3/16 package.

    Street strip, mostly street NA.

    .004-0045 per inch of bore on top ring, slightly more gap on second ring .0005

    So .0020 on top ring and .0022 on second ring

    Any thoughts or recommendations?

    Thanks
     
    Last edited: Mar 20, 2023
  2. Stevem

    Stevem Well-Known Member

    Depends on the material of the piston and how high up the top ring land is on the piston in regards to stock.
     
  3. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

  4. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Thanks Larry. That info confirms what I was seeing in various ring articles.
     
  5. standup 69

    standup 69 standup69

    You can go lots more on the second it's an oil wiper not a compression ring .don't even fear if you take too much away .
     
  6. Tom Righter

    Tom Righter Well-Known Member

    .030 on the second
     
    standup 69 likes this.
  7. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Thanks for the feedback
     

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